Ok, sure! I wasn’t thinking of applying my proposal anytime soon, but let’s do it!
I would first make sure to translate all names into something I could visualize:
Laius reminds me of Lay’s potato chips (which could be personified);
Jocasta reminds me of Juca, which is a name in Portuguese;
Oedipus always reminds me of Freud, and I find it easier to visualize the latter, so I’m gonna use him;
Polybus reminds me of a bus (personified);
Merope reminds me of a rope;
Eteocles reminds of E.T.;
Polyneices reminds me of Poliana, which is a common name in Portuguese;
Antigone reminds me of “antigo,” which means old in Portuguese, so I’m gonna imagine a very old lady;
Ismene sounds like Yasmin, another Portuguese name, so I’m gonna imagine a person I know.
(The first place would include personified Lay’s potato chips (Laius), Juca (Jocasta), and Freud (Oedipus))
I’d imagine a bedroom with personified Lay’s potato chips and Juca in bed, and then degenerate Freud leaves the wardrobe where he was secretly watching everything. Lay’s fly into a rage, throwing Freud out of the window with a punch.
(now the next region contains Polybus, Merope, and Freud)
Freud survives the fall because he fell over a bus (Polybus). Since I’m imagining the bus as personified, it has a face and a mouth. Still on the top of the bus, Freud picks a rope (Merope) and uses it as reins to drive the bus into the building.
(the next region contains Freud, Jocaste, Eteocles, Polyneices, Antigone, and Ismene)
Freud breaks into the house with the bus, running over Lay’s potato chips. He walks into the living room, where finds Juca crying over Lay’s death. Afraid of what Freud may do, Juca picks E.T.'s hand and throws the psychologist on the sofa using the alien’s telekinesis. He ends up falling on Poliana, who dies on the spot. Afraid, Freud carries the corpse and takes to an old witch (antigone) on the other side of the room, who resurrects the girl. Her sister, Yasmin (Ismene), still wants revenge, though. She steps on Freud, killing him instantly (Yasmin is a very tall woman).
Notice that the only thing that distinguishes parents from children is that the latter would move on to other regions/places. Because this is a very short family tree, this isn’t very explicit, though. Also, the only thing I used to distinguish biological parents from foster parents was that the former came first.